Method for refining and grading lead powder

Abstract

The invention discloses a method for refining and grading lead powder. The method comprises the following steps of: crushing a lead pig to obtain lead powder by using a lead powder machine; refining the lead powder entering an air current classifier system through the air current classifier system and classifying the lead powder into rough lead powder and fine lead powder; allowing the rough lead powder and the fine lead powder to respectively enter different hoppers; feeding the lead powder into a paste combining machine by using the hoppers filled with the lead powder; adding an acid water anode accessory and uniformly mixing to obtain positive lead paste; feeding the lead powder into the paste combining machine by using the hoppers filled with the rough lead powder; and adding an acid water anode accessory and uniformly mixing to obtain negative lead paste. According to the method disclosed by the invention, during lead powder processing, the lead powder is fully refined as required and is classified into the rough lead power and the fine lead powder, thus the classification of proper refining and any proportion can be conveniently achieved according to the purposes and the requirements, the requirements of the anode on the mean particle size and narrower particle size of the lead powder can be fully met (the requirements of the cathode can be met simultaneously), the particle size distribution of the anode active substance lead powder and the cathode active substance lead powder is smaller, the uniformity of the active substances is improved, further the utilization rate of the active substance of the battery is improved and the service life of a battery pack is prolonged while the lead loss is reduced. Since the yield of the lead powder machine is in positive correlation with the mean particle size of the lead powder, the yield cannot be influenced while the quality of the lead powder is improved after a refining and classifying device is additionally arranged.

Description

technical field [0001] The invention belongs to the field of lead-acid storage batteries, and in particular relates to a processing method for refining and grading lead powder of lead-acid storage batteries. Background technique [0002] Under the current lead powder production process, the particle size distribution of the lead powder produced by the lead powder machine is relatively wide, and it is usually directly used for smearing the positive and negative plates of the battery, and the requirements for the average particle size and particle size distribution of the lead powder are relatively high. There is no difference between the positive electrode and the negative electrode with relatively low requirements on the average particle size and particle size distribution of lead powder. The uniformity, life and lead consumption indicators of the battery are further improved by permanent use. [0003] Batteries connected in series with lean liquid AGM have higher and highe...

AI Technical Summary

Problems solved by technology

[0002] Under the current lead powder production process, the particle size distribution of the lead powder produced by the lead powder machine is relatively wide, and it is usually directly used for smearing the positive and negative plates of the battery, and the requirements for the average particle size and particle size distribution of the lead powder are relatively high. There is no difference between the positive electrode and the negative electrode with relatively low requirements on the average particle size and particle size distribution of lead powder. Further improvement of battery uniformity, life and lead consumption indicators through permanent use

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